getUrlParam = function (name) {
  var search = location.search.slice(1);
  var arr = search.split("&");
  for (var i = 0; i < arr.length; i++) {
    var ar = arr[i].split("=");
    if (ar[0] == name) {
      if (unescape(ar[1]) == 'undefined') {
        return "";
      } else {
        return unescape(ar[1]);
      }
    }
  }
  return "";
}